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1. (WO2010072587) SUBIMAGE EXTRACTION FROM JPEG ENCODED DATA
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/072587 International Application No.: PCT/EP2009/066933
Publication Date: 01.07.2010 International Filing Date: 11.12.2009
IPC:
H04N 7/26 (2006.01) ,H04N 7/30 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
24
Systems for the transmission of television signals using pulse code modulation
26
using bandwidth reduction
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
24
Systems for the transmission of television signals using pulse code modulation
26
using bandwidth reduction
30
involving transform coding
Applicants:
SCALADO AB [SE/SE]; Scheelevägen 17 Beta 3 S-223 70 Lund, SE (AllExceptUS)
NIEMI, Sami [SE/SE]; SE (UsOnly)
STEN, Johan [SE/SE]; SE (UsOnly)
Inventors:
NIEMI, Sami; SE
STEN, Johan; SE
Agent:
AWAPATENT AB; Box 5117 S-200 71 Malmö, SE
Priority Data:
0802657-723.12.2008SE
Title (EN) SUBIMAGE EXTRACTION FROM JPEG ENCODED DATA
(FR) EXTRACTION DE SOUS-IMAGES À PARTIR DE DONNÉES CODÉES JPEG
Abstract:
(EN) There is provided a method for processing a variable length code encoded image comprising a plurality of scan lines, wherein each scan line comprises a number of original code blocks comprising a differentially encoded parameter. The method comprises defining a subarea of the image comprising parts of a number of said scan lines, extracting the subarea, generating a set of auxiliary code blocks comprising an auxiliary differentially encoded parameter based on the first differentially encoded parameter of a first code block of a first current scan line in the subarea, and associating the auxiliary code blocks with the subarea. There is also provided an apparatus and a computer program product thereof.
(FR) L'invention concerne un procédé pour le traitement d'une image codée à code de longueur variable comprenant une pluralité de lignes de balayage, chaque ligne de balayage comprenant un certain nombre de blocs de code d'origine comprenant un paramètre de codage différentiel. Le procédé comprend la définition d'une sous-zone de l'image comprenant des parties d'un certain nombre desdites lignes de balayage, l'extraction de la sous-zone, la production d'un ensemble de blocs de code auxiliaires comprenant un paramètre de codage différentiel auxiliaire sur la base du premier paramètre de codage différentiel d'un premier bloc de code d'une première ligne de balayage actuelle dans la sous-zone, et l'association des blocs de code auxiliaires à la sous-zone. L'invention concerne également un appareil et un produit de programme informatique pour celui-ci.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP2371137